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carbon-lang/toolchain/lower/testdata/interop/cpp/method.carbon
T
David Blaikie 773b7136ef Use a single llvm::Module for C++ interop and Carbon IRGen (#6595) 
Some module metadata changed - because rather than linking one module
with one module metadata value (eg: PIC Level 0, or unspecified) and one
module with a different one (PIC level 2, in clang) - we use Clang's
Module as-is, no merging required, so Clang's module metadata sticks
rather than being merged with default values from Carbon.

Also tweaked the name we use for Clang's module name so it matches the
carbon file name.

Otherwise the IR changes seem to be just reorderings - C++ interop goes
first, then Carbon, rather than the other way around.
2026-01-17 00:15:53 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
// EXTRA-ARGS: --clang-arg=-std=c++26
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/method.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/method.carbon
// --- methods.h
struct Base {
virtual void virt0();
};
struct A: Base {
int by_val() const { return n; }
int by_ref() { return n; }
virtual void virt1();
int n;
};
// --- call_by_val.carbon
library "[[@TEST_NAME]]";
import Cpp library "methods.h";
fn UseVal(a: Cpp.A) -> i32 {
return a.by_val();
}
// --- call_by_ref.carbon
library "[[@TEST_NAME]]";
import Cpp library "methods.h";
fn UseVal(a: Cpp.A*) -> i32 {
return a->by_ref();
}
// --- call_virtual.carbon
library "[[@TEST_NAME]]";
import Cpp library "methods.h";
fn UseVal(a: Cpp.A*) {
a->virt0();
a->virt1();
}
// --- thunk.h
struct NeedThunk {
void Implicit(signed char c) const;
void Explicit(this NeedThunk, signed char c);
};
// --- call_thunk.carbon
library "[[@TEST_NAME]]";
import Cpp library "thunk.h";
fn Call(n: Cpp.NeedThunk) {
n.Implicit(1);
n.Explicit(1);
}
// CHECK:STDOUT: ; ModuleID = 'call_by_val.carbon'
// CHECK:STDOUT: source_filename = "call_by_val.carbon"
// CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
// CHECK:STDOUT:
// CHECK:STDOUT: %struct.A = type <{ %struct.Base, i32, [4 x i8] }>
// CHECK:STDOUT: %struct.Base = type { ptr }
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZNK1A6by_valEv = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define dso_local noundef i32 @_ZNK1A6by_valEv.carbon_thunk(ptr noundef nonnull align 8 dereferenceable(12) %this) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !12
// CHECK:STDOUT: %0 = load ptr, ptr %this.addr, align 8, !tbaa !12, !nonnull !15, !align !16
// CHECK:STDOUT: %call = call noundef i32 @_ZNK1A6by_valEv(ptr noundef nonnull align 8 dereferenceable(12) %0)
// CHECK:STDOUT: ret i32 %call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable
// CHECK:STDOUT: define linkonce_odr dso_local noundef i32 @_ZNK1A6by_valEv(ptr noundef nonnull align 8 dereferenceable(12) %this) #1 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !12
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: %n = getelementptr inbounds nuw %struct.A, ptr %this1, i32 0, i32 1
// CHECK:STDOUT: %0 = load i32, ptr %n, align 8, !tbaa !17
// CHECK:STDOUT: ret i32 %0
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CUseVal.Main(ptr %a) #2 !dbg !20 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %by_val__carbon_thunk.call = call i32 @_ZNK1A6by_valEv.carbon_thunk(ptr %a), !dbg !27
// CHECK:STDOUT: ret i32 %by_val__carbon_thunk.call, !dbg !28
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { alwaysinline mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #1 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #2 = { nounwind }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
// CHECK:STDOUT: !llvm.dbg.cu = !{!6}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
// CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !7 = !DIFile(filename: "call_by_val.carbon", directory: "")
// CHECK:STDOUT: !8 = !{!9, !9, i64 0}
// CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
// CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !12 = !{!13, !13, i64 0}
// CHECK:STDOUT: !13 = !{!"p1 _ZTS1A", !14, i64 0}
// CHECK:STDOUT: !14 = !{!"any pointer", !10, i64 0}
// CHECK:STDOUT: !15 = !{}
// CHECK:STDOUT: !16 = !{i64 8}
// CHECK:STDOUT: !17 = !{!18, !9, i64 8}
// CHECK:STDOUT: !18 = !{!"_ZTS1A", !19, i64 0, !9, i64 8}
// CHECK:STDOUT: !19 = !{!"_ZTS4Base"}
// CHECK:STDOUT: !20 = distinct !DISubprogram(name: "UseVal", linkageName: "_CUseVal.Main", scope: null, file: !7, line: 6, type: !21, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !25)
// CHECK:STDOUT: !21 = !DISubroutineType(types: !22)
// CHECK:STDOUT: !22 = !{!23, !24}
// CHECK:STDOUT: !23 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !24 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !25 = !{!26}
// CHECK:STDOUT: !26 = !DILocalVariable(arg: 1, scope: !20, type: !24)
// CHECK:STDOUT: !27 = !DILocation(line: 7, column: 10, scope: !20)
// CHECK:STDOUT: !28 = !DILocation(line: 7, column: 3, scope: !20)
// CHECK:STDOUT: ; ModuleID = 'call_by_ref.carbon'
// CHECK:STDOUT: source_filename = "call_by_ref.carbon"
// CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
// CHECK:STDOUT:
// CHECK:STDOUT: %struct.A = type <{ %struct.Base, i32, [4 x i8] }>
// CHECK:STDOUT: %struct.Base = type { ptr }
// CHECK:STDOUT:
// CHECK:STDOUT: $_ZN1A6by_refEv = comdat any
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define i32 @_CUseVal.Main(ptr %a) #0 !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %A.by_ref.call = call i32 @_ZN1A6by_refEv(ptr %a), !dbg !19
// CHECK:STDOUT: ret i32 %A.by_ref.call, !dbg !20
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: mustprogress nounwind uwtable
// CHECK:STDOUT: define linkonce_odr dso_local noundef i32 @_ZN1A6by_refEv(ptr noundef nonnull align 8 dereferenceable(12) %this) #1 comdat align 2 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !21
// CHECK:STDOUT: %this1 = load ptr, ptr %this.addr, align 8
// CHECK:STDOUT: %n = getelementptr inbounds nuw %struct.A, ptr %this1, i32 0, i32 1
// CHECK:STDOUT: %0 = load i32, ptr %n, align 8, !tbaa !24
// CHECK:STDOUT: ret i32 %0
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
// CHECK:STDOUT: !llvm.dbg.cu = !{!6}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
// CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !7 = !DIFile(filename: "call_by_ref.carbon", directory: "")
// CHECK:STDOUT: !8 = !{!9, !9, i64 0}
// CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
// CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "UseVal", linkageName: "_CUseVal.Main", scope: null, file: !7, line: 6, type: !13, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !17)
// CHECK:STDOUT: !13 = !DISubroutineType(types: !14)
// CHECK:STDOUT: !14 = !{!15, !16}
// CHECK:STDOUT: !15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
// CHECK:STDOUT: !16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !17 = !{!18}
// CHECK:STDOUT: !18 = !DILocalVariable(arg: 1, scope: !12, type: !16)
// CHECK:STDOUT: !19 = !DILocation(line: 7, column: 10, scope: !12)
// CHECK:STDOUT: !20 = !DILocation(line: 7, column: 3, scope: !12)
// CHECK:STDOUT: !21 = !{!22, !22, i64 0}
// CHECK:STDOUT: !22 = !{!"p1 _ZTS1A", !23, i64 0}
// CHECK:STDOUT: !23 = !{!"any pointer", !10, i64 0}
// CHECK:STDOUT: !24 = !{!25, !9, i64 8}
// CHECK:STDOUT: !25 = !{!"_ZTS1A", !26, i64 0, !9, i64 8}
// CHECK:STDOUT: !26 = !{!"_ZTS4Base"}
// CHECK:STDOUT: ; ModuleID = 'call_virtual.carbon'
// CHECK:STDOUT: source_filename = "call_virtual.carbon"
// CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CUseVal.Main(ptr %a) #0 !dbg !12 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc7_4.2.base = getelementptr inbounds nuw [16 x i8], ptr %a, i32 0, i32 0, !dbg !18
// CHECK:STDOUT: %Base.virt0.call.vtable = load ptr, ptr %.loc7_4.2.base, align 8, !dbg !18
// CHECK:STDOUT: %Base.virt0.call = getelementptr ptr, ptr %Base.virt0.call.vtable, i32 0, !dbg !18
// CHECK:STDOUT: %Base.virt0.call.memptr.virtualfn = load ptr, ptr %Base.virt0.call, align 8, !dbg !18
// CHECK:STDOUT: call void %Base.virt0.call.memptr.virtualfn(ptr %.loc7_4.2.base), !dbg !18
// CHECK:STDOUT: %A.virt1.call.vtable = load ptr, ptr %a, align 8, !dbg !19
// CHECK:STDOUT: %A.virt1.call = getelementptr ptr, ptr %A.virt1.call.vtable, i32 1, !dbg !19
// CHECK:STDOUT: %A.virt1.call.memptr.virtualfn = load ptr, ptr %A.virt1.call, align 8, !dbg !19
// CHECK:STDOUT: call void %A.virt1.call.memptr.virtualfn(ptr %a), !dbg !19
// CHECK:STDOUT: ret void, !dbg !20
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZN4Base5virt0Ev(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZN1A5virt1Ev(ptr noundef nonnull align 8 dereferenceable(12)) unnamed_addr #1
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { nounwind }
// CHECK:STDOUT: attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
// CHECK:STDOUT: !llvm.dbg.cu = !{!6}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
// CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !7 = !DIFile(filename: "call_virtual.carbon", directory: "")
// CHECK:STDOUT: !8 = !{!9, !9, i64 0}
// CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
// CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !12 = distinct !DISubprogram(name: "UseVal", linkageName: "_CUseVal.Main", scope: null, file: !7, line: 6, type: !13, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !16)
// CHECK:STDOUT: !13 = !DISubroutineType(types: !14)
// CHECK:STDOUT: !14 = !{null, !15}
// CHECK:STDOUT: !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !16 = !{!17}
// CHECK:STDOUT: !17 = !DILocalVariable(arg: 1, scope: !12, type: !15)
// CHECK:STDOUT: !18 = !DILocation(line: 7, column: 3, scope: !12)
// CHECK:STDOUT: !19 = !DILocation(line: 8, column: 3, scope: !12)
// CHECK:STDOUT: !20 = !DILocation(line: 6, column: 1, scope: !12)
// CHECK:STDOUT: ; ModuleID = 'call_thunk.carbon'
// CHECK:STDOUT: source_filename = "call_thunk.carbon"
// CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
// CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
// CHECK:STDOUT:
// CHECK:STDOUT: %struct.NeedThunk = type { i8 }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define dso_local void @_ZNK9NeedThunk8ImplicitEa.carbon_thunk(ptr noundef nonnull align 1 dereferenceable(1) %this, ptr noundef %c) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %this.addr = alloca ptr, align 8
// CHECK:STDOUT: %c.addr = alloca ptr, align 8
// CHECK:STDOUT: store ptr %this, ptr %this.addr, align 8, !tbaa !12
// CHECK:STDOUT: store ptr %c, ptr %c.addr, align 8, !tbaa !15
// CHECK:STDOUT: %0 = load ptr, ptr %this.addr, align 8, !tbaa !12, !nonnull !17
// CHECK:STDOUT: %1 = load ptr, ptr %c.addr, align 8, !tbaa !15
// CHECK:STDOUT: %2 = load i8, ptr %1, align 1, !tbaa !18
// CHECK:STDOUT: call void @_ZNK9NeedThunk8ImplicitEa(ptr noundef nonnull align 1 dereferenceable(1) %0, i8 noundef signext %2)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZNK9NeedThunk8ImplicitEa(ptr noundef nonnull align 1 dereferenceable(1), i8 noundef signext) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: alwaysinline mustprogress uwtable
// CHECK:STDOUT: define dso_local void @_ZNH9NeedThunk8ExplicitES_a.carbon_thunk(ptr noundef %0, ptr noundef %c) #0 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.addr = alloca ptr, align 8
// CHECK:STDOUT: %c.addr = alloca ptr, align 8
// CHECK:STDOUT: %agg.tmp = alloca %struct.NeedThunk, align 1
// CHECK:STDOUT: store ptr %0, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: store ptr %c, ptr %c.addr, align 8, !tbaa !15
// CHECK:STDOUT: %1 = load ptr, ptr %.addr, align 8, !tbaa !12
// CHECK:STDOUT: %2 = load ptr, ptr %c.addr, align 8, !tbaa !15
// CHECK:STDOUT: %3 = load i8, ptr %2, align 1, !tbaa !18
// CHECK:STDOUT: call void @_ZNH9NeedThunk8ExplicitES_a(i8 noundef signext %3)
// CHECK:STDOUT: ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_ZNH9NeedThunk8ExplicitES_a(i8 noundef signext) #1
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nounwind
// CHECK:STDOUT: define void @_CCall.Main(ptr %n) #2 !dbg !19 {
// CHECK:STDOUT: entry:
// CHECK:STDOUT: %.loc7_14.3.temp = alloca i8, align 1, !dbg !25
// CHECK:STDOUT: %.loc8_14.3.temp = alloca i8, align 1, !dbg !26
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc7_14.3.temp), !dbg !25
// CHECK:STDOUT: store i8 1, ptr %.loc7_14.3.temp, align 1, !dbg !25
// CHECK:STDOUT: call void @_ZNK9NeedThunk8ImplicitEa.carbon_thunk(ptr %n, ptr %.loc7_14.3.temp), !dbg !27
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(ptr %.loc8_14.3.temp), !dbg !26
// CHECK:STDOUT: store i8 1, ptr %.loc8_14.3.temp, align 1, !dbg !26
// CHECK:STDOUT: call void @_ZNH9NeedThunk8ExplicitES_a.carbon_thunk(ptr %n, ptr %.loc8_14.3.temp), !dbg !28
// CHECK:STDOUT: ret void, !dbg !29
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.lifetime.start.p0(ptr captures(none)) #3
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }
// CHECK:STDOUT:
// CHECK:STDOUT: attributes #0 = { alwaysinline mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
// CHECK:STDOUT: attributes #2 = { nounwind }
// CHECK:STDOUT: attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
// CHECK:STDOUT:
// CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
// CHECK:STDOUT: !llvm.dbg.cu = !{!6}
// CHECK:STDOUT: !llvm.errno.tbaa = !{!8}
// CHECK:STDOUT:
// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
// CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
// CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 2}
// CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
// CHECK:STDOUT: !5 = !{i32 7, !"uwtable", i32 2}
// CHECK:STDOUT: !6 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !7, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
// CHECK:STDOUT: !7 = !DIFile(filename: "call_thunk.carbon", directory: "")
// CHECK:STDOUT: !8 = !{!9, !9, i64 0}
// CHECK:STDOUT: !9 = !{!"int", !10, i64 0}
// CHECK:STDOUT: !10 = !{!"omnipotent char", !11, i64 0}
// CHECK:STDOUT: !11 = !{!"Simple C++ TBAA"}
// CHECK:STDOUT: !12 = !{!13, !13, i64 0}
// CHECK:STDOUT: !13 = !{!"p1 _ZTS9NeedThunk", !14, i64 0}
// CHECK:STDOUT: !14 = !{!"any pointer", !10, i64 0}
// CHECK:STDOUT: !15 = !{!16, !16, i64 0}
// CHECK:STDOUT: !16 = !{!"p1 omnipotent char", !14, i64 0}
// CHECK:STDOUT: !17 = !{}
// CHECK:STDOUT: !18 = !{!10, !10, i64 0}
// CHECK:STDOUT: !19 = distinct !DISubprogram(name: "Call", linkageName: "_CCall.Main", scope: null, file: !7, line: 6, type: !20, spFlags: DISPFlagDefinition, unit: !6, retainedNodes: !23)
// CHECK:STDOUT: !20 = !DISubroutineType(types: !21)
// CHECK:STDOUT: !21 = !{null, !22}
// CHECK:STDOUT: !22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 8)
// CHECK:STDOUT: !23 = !{!24}
// CHECK:STDOUT: !24 = !DILocalVariable(arg: 1, scope: !19, type: !22)
// CHECK:STDOUT: !25 = !DILocation(line: 7, column: 14, scope: !19)
// CHECK:STDOUT: !26 = !DILocation(line: 8, column: 14, scope: !19)
// CHECK:STDOUT: !27 = !DILocation(line: 7, column: 3, scope: !19)
// CHECK:STDOUT: !28 = !DILocation(line: 8, column: 3, scope: !19)
// CHECK:STDOUT: !29 = !DILocation(line: 6, column: 1, scope: !19)
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